JP4480087B2 - Freezer flooring - Google Patents

Description

  The present invention relates to a floor material of a freezer mounted on a freezer car or the like.

  As a floor material of a freezer mounted on a freezer car or the like, the one shown in FIG. 6 is used (for example, see Patent Document 1).

  That is, FIG. 6 is a partial cross-sectional view of a conventional floor material, and the floor material 101 shown in the figure is formed on the upper surface of a double-sided aluminum sandwich panel 105 formed by bonding an aluminum plate 104 to both surfaces of a heat insulating material 103 such as polystyrene foam. The aluminum mold members 102A and 102B were laid.

  Here, the aluminum mold materials 102A and 102B (the aluminum mold materials are the same, but for convenience of explanation, the adjacent ones are 102A and 102B here) are aluminum extrusion molded products, and their width direction A first engaging portion K1 ′ and a second engaging portion K2 ′ are formed at both ends, and the adjacent aluminum mold members 102A and 102B are engaged with each other by engaging the engaging portions K1 ′ and K2 ′. They are connected and attached to the aluminum plate 104 of the double-sided aluminum sandwich panel 105 by rivets 107.

A fitting recess 102h is formed in the engagement portion K1 ′ formed in each of the aluminum mold members 102A and 102B, and the aluminum mold member 102A is attached to the aluminum of the double-sided aluminum sandwich panel 105 by a rivet 107 inserted through the engagement portion K1 ′. After attaching to the plate 104, the engaging portion K2 ′ of another adjacent aluminum mold member 102B is inserted into the engaging portion K1 ′ of the aluminum mold member 102A from above, and the protrusions 102j and 102e of the engaging portion K2 ′ are engaged with the engaging portion. The aluminum mold member 102B is connected to the aluminum mold member 102A by fitting the fitting recesses 102h and 102n of K1 ′. By repeating such operations, the floor material 101 is configured by laying the aluminum mold members 102A and 102B on the double-sided aluminum sandwich panel 105 while connecting them. The connecting portions between the adjacent aluminum mold members 102A and 102B are sealed with a sealing material 108 such as rubber.
Japanese Patent Laid-Open No. 10-316053

  However, in the conventional floor material 101 shown in FIG. 6, as shown in FIG. 7, for example, a caster 106 such as a carriage moves on the floor material 101 and is positioned at a connecting portion between the aluminum mold members 102 </ b> A and 102 </ b> B. When a downward load P is applied to the connecting portion from the top, the problem arises that the aluminum mold member 102B is lifted and the connecting portion is opened as shown.

  Further, when the aluminum mold member 102B is repeatedly lifted, there arises a problem that the sealing material 108 is repeatedly deteriorated by receiving a load.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a freezer floor material that can prevent the metal mold material from being lifted by a load, and can achieve weight reduction and cost reduction. is there.

In order to achieve the above object, according to the first aspect of the present invention, a first engaging portion and a second engaging portion are formed at both end edges of a metal mold member composed of an upper plate and a lower plate, A plurality of metal mold members are connected to each other by engaging the first and second engagement portions of the metal mold material with the second and first engagement portions of adjacent metal mold materials, respectively. In the floor material for a freezer constructed by attaching a panel with a heat insulating material to the back surface of a plurality of connected metal molds,
In the first engagement portion of the metal mold material, a protrusion extending obliquely outward from the end of the upper plate toward the lower plate, and a convex portion extending horizontally from the lower plate inside the protrusion,
A rib that inclines obliquely inwardly from the end of the upper plate to the lower plate, and extends horizontally from the lower plate and protrudes outward from the end of the upper plate at the second engaging portion of the metal mold. Form an insertion part formed at the end of the extension part and a protrusion formed inside thereof,
By the contact of the tapered surface of the protrusion of the first engaging portion and the tapered surface of the rib of the second engaging portion to the connecting portion by the engagement of the first and second engaging portions of the adjacent metal mold member a first engaging portion, the tip portion of the insertion portion of the second engaging portion by recess-projection fitting which fits into the recess formed between the projection and the rib of the first engagement portion and the second By restricting the upward bending around the connecting portion of the adjacent metal mold material by forming the locking portion,
A plurality of metal mold members connected to each other are bonded to the heat insulating material of the panel with the heat insulating material.

  According to a second aspect of the present invention, in the first aspect of the present invention, the back surfaces of the plurality of metal mold members connected to each other form a plane.

A third aspect of the invention is characterized in that in the first or second aspect of the invention, the first and second locking portions are sealed with an adhesive.

According to the first aspect of the present invention, when both metal mold members are connected by the engagement between the first and second engaging portions of the adjacent metal mold members, the first engaging portion is connected to the connecting portion. convex tapered surface of the projection and the first engaging portion by the abutment of the tapered surface of the rib of the second engagement portion, the distal end portion of the insertion portion of the second engaging portion of the first engagement portion A second locking portion is formed by a concave-convex fitting that fits into a recess formed between the portion and the rib, and the first and second locking portions are used to center the connecting portion of both metal molds. Since upward bending is restricted, lifting of all the metal mold members connected to each other is prevented. And since the back surface of the connected metal mold | die material is adhere | attached to the heat insulating material of a panel with a heat insulating material over the whole surface, the bending strength by the attachment strength of this metal metal mold | die material and a load is raised.

  In addition, as a panel with a heat insulating material, a single-sided panel in which a metal plate or a resin plate is bonded only to one side of the heat insulating material can be used instead of a double-sided panel in which a metal plate is bonded to both surfaces of the heat insulating material. Can be reduced in weight and cost.

  According to invention of Claim 2, since the back surface of the some metal mold | die material connected mutually forms a plane, a contact area increases, The whole surface is attached to the upper surface of the heat insulating material of a panel with a heat insulating material with an adhesive agent. Adhering firmly, the adhesive strength is increased.

According to the invention of claim 3, since the opening due to the load does not occur in the connecting portion between the adjacent metal mold members, the first and second locking portions can be sealed with the adhesive, The sealability can be improved, and the weight of the flooring can be reduced and the cost can be reduced.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view showing a part of a freezer provided with a flooring according to the present invention in a cutaway state, FIG. 2 is an enlarged detail view of part A in FIG. 1, FIG. 3 is a transverse sectional view of an aluminum mold, and FIG. Sectional drawing which shows the state when a load acts on the flooring which concerns on FIG. 5, FIG.5 (a)-(c) is a fragmentary sectional view which shows the assembly point of the flooring which concerns on this invention in order of the process.

  A freezer 50 shown in FIG. 1 is mounted, for example, on a loading platform of a freezer truck (not shown), and is formed in a rectangular box shape. The rear surface opening is opened and closed by left and right open / close doors 51. Here, the left and right open / close doors 51 are of a double door type, and these are rotatably supported by three hinges 52 arranged at appropriate intervals in the vertical direction. It is locked by each locking means 53.

  Moreover, the floor in the freezer 50 is comprised with the flooring 1 which concerns on this invention, and the several aluminum type | mold material 2 long in the front-back direction connected in the width direction is laid on the surface of the flooring 1. . Although not shown, the freezer 50 is provided with refrigeration equipment such as an evaporator.

  Here, the detail of the structure of the flooring 1 which concerns on this invention is demonstrated based on FIG.2 and FIG.3.

  As shown in FIG. 2, the flooring 1 is formed on the upper surface of the heat insulating material 3 of a single-sided aluminum panel 5 with a heat insulating material formed by bonding an aluminum plate 4 as an outer plate to the lower surface of the heat insulating material 3 such as polystyrene (PS) foam. The plurality of connected aluminum mold members 2 are bonded to each other with an adhesive.

  Each aluminum mold 2 is an aluminum extrusion-molded product, and as shown in FIG. 3, the upper plate 2a and the lower plate 2b are connected by a plurality of vertical ribs 2c, and are formed on the surface of the upper plate 2a. A plurality of anti-slip ridges 2d are formed in parallel to each other in the length direction (perpendicular to the plane of FIG. 3).

  Moreover, as shown in FIG. 3, the 1st engaging part K1 and the 2nd engaging part K2 are each formed in the width direction both ends edge of each aluminum type | mold material 2. As shown in FIG. Here, the first engagement portion K1 is formed by a protrusion 2e extending obliquely outward from the end of the upper plate 2a of the aluminum mold member 2 toward the lower plate 2b, and horizontally from the lower plate 2b on the inner side of the protrusion 2e. And a convex portion 2f having a semicircular cross section extending in the direction of the diameter, and a concave portion 2h is formed between the convex portion 2f and the rib 2g.

  On the other hand, the second engaging portion K2 includes a rib 2i inclined obliquely inward from the end of the upper plate 2a of the aluminum mold member 2 to the lower plate 2b, and an end of the upper plate 2a extending horizontally from the lower plate 2b. It is composed of a half-ring-shaped insertion portion 2j formed at the end of the extension portion protruding outward and a projection 2k formed inside thereof, and the insertion portion 2j has a semicircular cross-section. A concave portion 2m is formed, and a concave portion 2n is formed between the protrusion 2k and the rib 2i.

  Thus, as shown in FIG. 2, the adjacent aluminum molds 2A and 2B are engaged with the first engagement part K1 of one aluminum mold 2A and the second engagement part K2 of the other aluminum mold 2B. They are linked together. When the two aluminum mold members 2A and 2B are connected in this way, at the connecting portion, the convex portion 2f of the first engagement portion K1 of one aluminum mold member 2A is the second engagement of the other aluminum mold member 2B. The concave portion 2m (see FIG. 3) formed in the insertion portion 2j of the portion K2 is fitted (concave fitting), and the outer surface (tapered surface) of the projection 2e of the first engaging portion K1 is the second engaging portion. It abuts on the outer surface (tapered surface) of the rib 2i of the portion K2. At the same time, the distal end of the insertion portion 2j of the second engagement portion K2 is fitted (concave fitting) into the recess 2h (see FIG. 3) of the first engagement portion K1, and the first engagement portion The tip end portion of the protrusion 2e of K1 is fitted (concave / convex fitting) into the recess 2n (see FIG. 3) of the second engagement portion K2.

  As described above, when both the aluminum mold members 2A and 2B are connected by the engagement of the second engagement part K2 of the other aluminum mold member 2B with the first engagement part K1 of one aluminum mold member 2A, The connecting portion includes a first locking portion S1 formed by contact between the outer surface (tapered surface) of the protrusion 2e of the first engaging portion K1 and the outer surface (tapered surface) of the rib 2i of the second engaging portion K2. A second locking portion S2 is formed by fitting the concave end 2h of the first engaging portion K1 at the distal end of the insertion portion 2j of the second engaging portion K2 (concave fitting).

  When a plurality of aluminum molds 2A and 2B are connected as described above, the back surfaces (lower surfaces) of these aluminum molds 2A and 2B form a flat surface so that the contact area increases, and the entire surface is a heat insulating material. The adhesive is firmly bonded to the upper surface of the heat insulating material 3 of the single-sided aluminum panel 5 with an adhesive, and the adhesive strength is increased. Note that an adhesive is applied to the first and second locking portions S1 and S2 formed at the connecting portion between the adjacent aluminum molds 2A and 2B, and the first and second locking portions S1 are applied. , S2 are sealed by an adhesive, which improves the sealing performance of the connecting portion.

  Thus, the caster 6 such as a carriage moves on the flooring 1 configured as described above as shown in FIG. 4, and a downward load P is applied from the caster 6 to the connecting portion of the adjacent aluminum molds 2A and 2B. When added, the first locking portion S1 of the connecting portion restricts upward bending around the connecting portion of one aluminum mold member 2B, and the second locking portion S2 connects the other aluminum mold member 2A. In order to regulate upward bending around the center, even if the connecting part between the two aluminum mold members 2A and 2B receives the load P, the two aluminum mold members 2A and 2B do not float, and the connecting part opens. There is no. In addition, since the opening due to the load P does not occur in the connecting portion between the adjacent aluminum molds 2A and 2B, the locking portions S1 and S2 can be sealed with an adhesive, and the sealing performance of the connecting portion is improved. The durability of the seal part is increased.

  And as a result of preventing the lifting of all the aluminum mold members 2 (2A, 2B,...), The back surfaces of the plurality of aluminum mold members 2 (2A, 2B,...) Connected to each other form a plane over the entire surface. Since the contact area with the heat insulating material 3 of the single-sided aluminum panel 5 with a heat insulating material increases, it will adhere | attach firmly, and the bending strength by the adhesive strength and load of the aluminum type | mold material 2 will be raised.

  In addition, since a plurality of aluminum molds 2 connected to each other are bonded to the heat insulating material 3 of the single-sided aluminum panel 5 with a heat insulating material, both sides of the heat insulating material 103 as shown in FIG. Instead of the double-sided panel 105 to which the plate 104 is bonded, the single-sided panel 5 in which the aluminum plate 4 is bonded only to one side of the heat insulating material 3 can be used, and the flooring 1 can be reduced in weight and cost can be reduced. . Since the aluminum mold member 2 is made of an extruded aluminum product that is easy to mold and lightweight, the weight of the flooring member 1 can be reduced and the cost can be reduced.

  Next, the procedure for assembling the flooring according to the present invention will be described with reference to FIGS.

  When the floor material 1 is assembled, first, a plurality of aluminum mold members 2 are connected, and the work is performed with the aluminum mold members 2 (2A, 2B) turned upside down as shown in FIG. That is, one aluminum mold 2A is placed horizontally with the lower surface (the surface to be bonded to the heat insulating material 3 of the single-sided aluminum panel 5 with a heat insulating material) facing upward, and the other aluminum mold 2B with the lower surface facing up is similarly mounted. The aluminum mold member 2B is tilted obliquely and inserted into the first engagement part K1 of one aluminum mold member 2A obliquely from above, with the second engagement part K2 at the end thereof being inserted into the arrow of FIG. 5 (a). When it is rotated in the direction to be in a horizontal state, as shown in FIG. 5B, the second engagement portion K2 is engaged with the first engagement portion K1, and the two aluminum mold members 2A and 2B are connected. Is done. Note that when the two aluminum mold members 2A and 2B are connected, an adhesive is applied in advance to the first and second locking portions S1 and S2 formed by the connection.

  When a plurality of aluminum molds 2 (2A, 2B,...) Are connected by repeating the above operation, as shown in FIG. 5C, the upper surfaces (assembled state) of the connected plurality of aluminum molds 2A, 2B. In this case, the back surface is covered with a single-sided aluminum panel 5 with a heat insulating material with the heat insulating material 3 facing down, and the heat insulating material 3 is bonded to the upper surfaces of the aluminum molds 2A and 2B with an adhesive.

  As described above, when the heat insulating material 3 of the single-sided aluminum panel 5 with the heat insulating material is bonded to the upper surfaces of the plurality of aluminum mold members 2 (2A, 2B,...), The whole is turned upside down and turned upside down. The flooring 1 as shown in 2 is obtained.

  In the above embodiment, the single-sided aluminum panel 5 with the heat insulating material formed by bonding the aluminum plate 4 as the outer plate to the lower surface of the heat insulating material 3 is used as the panel with the heat insulating material. A resin (FRP) panel with a heat insulating material formed by adhering (FRP) plates can also be used.

  The present invention can be applied not only to a freezer mounted on a freezer car but also to a floor material of a fixed freezer such as a prefabricated freezer, and the same effect as described above can be obtained.

It is a perspective view which fractures | ruptures and shows a part of freezer provided with the flooring which concerns on this invention. It is the A section enlarged detail drawing of FIG. It is a cross-sectional view of the aluminum mold material which comprises the flooring which concerns on this invention. It is a fragmentary sectional view which shows the state when a load acts on the flooring which concerns on this invention. (A)-(c) is a fragmentary sectional view which shows the assembly point of the flooring based on this invention in the order of the process. It is a fragmentary sectional view of the conventional flooring. It is a fragmentary sectional view which shows the state when a load acts on the conventional flooring.

Explanation of symbols

1 Floor material for freezer (floor material)
2 (2A, 2B) Aluminum mold (metal mold)
2a upper plate 2b lower plate 2c vertical rib 2d protrusion 2e protrusion 2f protrusion 2g rib 2h recess 2i rib 2j insertion portion 2k protrusion 2m, 2n recess 3 heat insulating material 4 aluminum plate 5 single-sided aluminum panel with heat insulating material (panel with heat insulating material) )
6 Casters K1 1st engaging part K2 2nd engaging part S1 1st latching | locking part S2 2nd latching | locking part

Claims (3)

A first engaging portion and a second engaging portion are respectively formed at both end edges of a metal mold member composed of an upper plate and a lower plate, and the first and second engaging portions of the metal mold member are formed. A plurality of metal mold materials are connected to each other by engaging the second and first engaging portions of different adjacent metal mold materials, and a heat insulating material is provided on the back surface of the plurality of metal mold materials connected to each other. In the freezer flooring that is configured with panels,
In the first engagement portion of the metal mold material, a protrusion extending obliquely outward from the end of the upper plate toward the lower plate, and a convex portion extending horizontally from the lower plate inside the protrusion,
A rib that inclines obliquely inwardly from the end of the upper plate to the lower plate, and extends horizontally from the lower plate and protrudes outward from the end of the upper plate at the second engaging portion of the metal mold. Form an insertion part formed at the end of the extension part and a protrusion formed inside thereof,
By the contact of the tapered surface of the protrusion of the first engaging portion and the tapered surface of the rib of the second engaging portion to the connecting portion by the engagement of the first and second engaging portions of the adjacent metal mold member a first engaging portion, the tip portion of the insertion portion of the second engaging portion by recess-projection fitting which fits into the recess formed between the projection and the rib of the first engagement portion and the second By restricting the upward bending around the connecting portion of the adjacent metal mold material by forming the locking portion,
A floor material for a freezer, wherein the back surfaces of a plurality of metal mold members connected to each other are bonded to the heat insulating material of the panel with the heat insulating material.   The floor material for a freezer according to claim 1, wherein the back surfaces of the plurality of metal mold members connected to each other form a flat surface. The floor material for a freezer according to claim 1 or 2 , wherein the first and second engaging portions are sealed with an adhesive.

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